New Hampshire is shaken by the discovery of barrels dumped in the woods with the mutilated remains of young, female victims; the police case goes cold and amateur sleuths pick up the investigation to make a breakthrough.
Detectives investigating the strange case of an abandoned girl link the man claiming to be her father with the mummified remains of a woman buried in cat litter; police and amateur sleuths work together to reveal a killer with multiple identities.